Acts 3:9

People saw him. This miracle was not done “in a corner.” Witnesses to the reality of the cure were numerous, and among them must have been many who for years had known this man as a cripple. This the Jewish authorities admitted among themselves (ch. 4:16).

The detailed and circumstantial account that Luke gives here brings conviction as one reads it. It was based doubtless on the stories of eyewitnesses whom he interviewed, and authenticated by Inspiration. The God who created can re-create, and He does so at will.